CN214613571U

CN214613571U - Expansion joint structure

Info

Publication number: CN214613571U
Application number: CN202023194522.XU
Authority: CN
Inventors: 余运良; 邱鹏; 施恩; 廖盛荣; 王恒涛; 胡俊
Original assignee: Road and Bridge International Co Ltd; Road and Bridge South China Engineering Co Ltd
Current assignee: Road and Bridge International Co Ltd; Road and Bridge South China Engineering Co Ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-11-05
Anticipated expiration: 2030-12-23

Abstract

The application provides an expansion joint structure has solved the relatively poor problem of current expansion joint structure change difficulty and structural stability, expansion joint structure is including erectting waterstop and the waterstop installation department between two roof beam bodies, and the bottom protrusion of waterstop installation department is formed with the connecting block, is equipped with on the roof beam body to extend along the horizontal direction and supplies the connecting block to plant in order to install fixed spread groove with the waterstop installation department, and the lateral surface that the waterstop installation department is close to the roof beam body is equipped with the sealing layer. The connecting block through the waterstop installation part is in plug-in fit with the connecting groove in the beam body to realize the connection of the waterstop and the beam body, and the connecting structure is simple, convenient to assemble and capable of facilitating the replacement of the subsequent waterstop. And the expansion joint structure of this application sets up the sealing layer through installing the portion side at the waterstop to and the integrated configuration of the steel band of waterstop and rubber tape, make the expansion joint structure of this application have good sealed waterproof nature.

Description

Expansion joint structure

Technical Field

The application relates to bridge expansion joint field especially relates to an expansion joint structure.

Background

The expansion joint is an important component of a bridge structure, the normal expansion function of a beam body is guaranteed, under the repeated action of load and environment, the expansion joint structure is easy to damage, the water stop belt is easy to age, water leakage of a beam end is caused, diseases such as corrosion of a steel plate or a steel bar of the beam end, whitening of the surface of a bridge lower structure, water stain and the like are caused, sundries are filled in the beam end when the damage is serious, the normal expansion function of the structure is influenced, and the structure safety is finally influenced. In the bridge expansion joint maintenance engineering, main defects of the expansion joint are defects of local steel rail damage, rubber strip aging and water leakage, which easily cause defects of abnormal sound of the expansion joint, whitening of the surface of a lower structure, water stain, corrosion of steel bars and steel plates and the like, and seriously affect the driving safety and durability of the bridge.

At present, the method for treating the diseases mainly comprises the steps of dismantling and replacing the expansion joint device and replacing the rubber strip, but the whole expansion joint replacement process is complex, and meanwhile, the risks of damage of a beam end structure, filling of building garbage in a beam end gap, incapability of achieving the expansion joint maintenance effect and the like exist.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an expansion joint structure that structural stability is high, construction convenience and waterproof nature is good.

In order to achieve the above object, the present application provides the following technical solutions:

the utility model provides an expansion joint structure, is including erectting waterstop and the waterstop installation department between two roof beam bodies, the bottom protrusion of waterstop installation department is formed with the connecting block, be equipped with on the roof beam body and extend and supply along the horizontal direction the connecting block plant with the fixed spread groove of waterstop installation department installation, the waterstop installation department is close to the lateral surface of the roof beam body is equipped with the sealing layer.

Further setting: the waterstop installation part is provided with an installation hole, the end part of the waterstop is provided with a bulge, and the end part of the waterstop is inserted into the installation hole and is clamped with the installation hole.

Further setting: the waterstop is the setting of V type, just the waterstop includes the steel band and is located the rubber band of steel band below.

Further setting: reinforcing parts are arranged at the connecting grooves of the two beam bodies and extend from the bridge deck pavement layer of the beam body to the beam plate;

the rib includes concrete layer and anchor reinforcing bar, the spread groove is seted up in the concrete layer, the anchor reinforcing bar is the S form and follows the concrete layer extends to the beam slab.

Further setting: the anchor reinforcing bar is located concrete layer's tip is located the spread groove top, concrete layer is located the below of spread groove is equipped with pre-buried steel sheet.

Further setting: and longitudinal steel bars which extend into the concrete layer from the connecting part of the bridge deck pavement layer and the beam plate and are connected with the embedded steel plates are arranged in the beam body.

Further setting: all be equipped with many transverse reinforcement in concrete layer and the roof beam body, just transverse reinforcement laminating the anchor reinforcing bar sets up.

Further setting: the concrete layer is formed by pouring C50 steel fiber concrete.

Further setting: the expansion amount is 0-80 mm.

Further setting: the sealing layer includes an elastic rubber layer.

Compared with the prior art, the scheme of the application has the following advantages:

1. in the expansion joint structure of this application, the connecting block through the waterstop installation department is pegged graft the cooperation with the spread groove on the roof beam body to realize being connected of waterstop and the roof beam body, simple structure, convenient assembling can be convenient for follow-up waterstop's change. And the expansion joint structure of this application sets up the sealing layer through installing the portion side at the waterstop to and the integrated configuration of the steel band of waterstop and rubber tape, make the expansion joint structure of this application have good sealed waterproof nature.

2. In the expansion joint structure of this application, the position that the roof beam body corresponds the connecting groove sets up the rib for the roof beam body has good structural strength with the position of being connected of waterstop, can avoid the destruction that causes the roof beam body when changing the waterstop, has also ensured expansion joint structure's stability.

Drawings

The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of an embodiment of an expansion joint structure according to the present application.

In the figure, 1, a water stop band; 11. a protrusion; 2. a waterstop mounting section; 21. connecting blocks; 22. a sealing layer; 3. a reinforcing portion; 31. a concrete layer; 32. anchoring the reinforcing steel bars; 33. anchoring a steel plate; 34. longitudinal reinforcing steel bars; 35. transverse reinforcing steel bars; 4. a bridge deck pavement layer; 5. a beam plate.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

To the current relatively poor problem of the complicated and canned type of whole change expansion joint process, this application provides an expansion joint structure, and simple structure adopts the assembled structure can be convenient for change, has good structural stability and waterproof sealing nature simultaneously.

In this embodiment, the expansion joint between the main bridge steel beam and the approach bridge ballast box beam is taken as an example, the expansion amount of the expansion joint is 0-80mm, and the installation temperature of the expansion joint is 15-20 ℃.

Referring to fig. 1, the expansion joint structure includes a water stop 1 and a water stop 1 mounting portion additionally disposed between two beams, two water stop 1 mounting portions are disposed at two ends of the water stop 1 and respectively located on the two beams, a connecting block 21 is formed at the bottom of the water stop 1 mounting portion in a protruding manner, and correspondingly, a connecting groove (not shown in the drawings, the same below) extending in the horizontal direction is disposed on the beams, and the connecting block 21 can be inserted into the connecting groove to fix the water stop 1 mounting portion to the beams. Simultaneously, 1 installation department of waterstop is close to the lateral surface of the roof beam body is equipped with sealing layer 22, sealing layer 22 preferably adopts the elastic rubber layer, makes connecting block 21 and the roof beam body are close to completely, thereby can improve the waterproof sealing performance between expansion joint structure and the bridge roof beam body.

Specifically, a mounting hole (not marked in the figure, the same below) is formed in one side, back to the beam body connected with the water stop mounting portion 2, of the water stop mounting portion 2, the end portion of the water stop 1 is inserted into the mounting hole, and a protrusion 11 is arranged at the end portion of the water stop 1, so that the end portion of the water stop 1 can be stably clamped in the mounting hole.

Further, waterstop 1 is the setting of V type, just waterstop 1 includes steel band and rubber tape, the rubber tape is located the below of steel band. The water stop 1 of the water stop device adopts a combination form of the steel belt and the rubber belt, so that the water stop 1 has good elastic deformation capacity, and meanwhile, the steel belt is positioned above the water stop 1, so that the rubber belt can be prevented from being rotten due to long-time exposure to the sun and rain, and the service life of the water stop 1 is prolonged; and the bottom of steel band sets up the rubber band for the tip of waterstop 1 can be with 1 installation department of waterstop hugging closely, ensures stability and sealed waterproof nature that

waterstop

1 and 1 installation department of waterstop are connected then.

In addition, the two beam bodies are also provided with a reinforcing part 3 at the connecting groove, and the reinforcing part 3 extends from the bridge deck pavement layer 4 of the beam body to the beam plate 5. Specifically, the reinforcement 3 includes a concrete layer 31 and an anchor bar 32, the connecting groove is opened in the concrete layer 31, and the anchor bar 32 extends from the concrete layer 31 to the beam plate 5 in an S-shape. Simultaneously, the tip that anchor reinforcing bar 32 is located concrete layer 31 extends and is located the top of spread groove along the horizontal direction, and concrete layer 31 is located the below of spread groove is equipped with pre-buried steel sheet, thereby can mention the structural strength of spread groove to the problem of solving when changing waterstop 1 to the beam end structure destruction, can reduce the destruction that both sides roof beam body collided and caused simultaneously when the expansion joint shrink.

Further, still be equipped with the longitudinal reinforcement 34 that extends to in the concrete layer 31 from the bridge deck pavement layer 4 and the junction of beam slab 5 in the roof beam body, simultaneously the longitudinal reinforcement 34 is located the tip in the concrete layer 31 with the embedded steel plate is connected to further improve the structural strength of rib 3.

Simultaneously, concrete layer 31 and the roof beam body still are equipped with many transverse reinforcement 35, transverse reinforcement 35 with vertical reinforcement 34 is vertically and horizontally perpendicular to be set up, just transverse reinforcement 35 laminates anchor reinforcing bar 32 sets up to can improve the structural strength of rib 3.

Preferably, the concrete layer 31 of the embodiment is formed by casting C50 steel fiber concrete of 60kg/m3, so that the reinforcing part 3 has good compressive strength, compressive toughness, tensile strength, bending strength and shear strength, thereby ensuring the connection stability of the beam body and the waterstop mounting part 2.

To sum up, the expansion joint structure of this application passes through the connecting block 21 of waterstop installation department 2 and the cooperation of pegging graft of spread groove on the roof beam body to realize being connected of waterstop 1 and the roof beam body, simple structure, convenient assembling can be convenient for follow-up waterstop 1's change. Meanwhile, the reinforcing part 3 is arranged at the position of the beam body corresponding to the connecting groove, so that the connecting part of the beam body and the water stop belt 1 has good structural strength, the damage to the beam body when the water stop belt 1 is replaced can be avoided, and the stability of the expansion joint structure is also ensured. In addition, this application sets up sealing layer 22 through 2 sides at the waterstop installation department to and the integrated configuration of the steel band of waterstop 1 and rubber tape, make the expansion joint structure of this application have good sealed waterproof nature.

The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.

Claims

1. An expansion joint structure, characterized by: including setting up waterstop and the waterstop installation department between two roof beam bodies, the bottom protrusion of waterstop installation department is formed with the connecting block, be equipped with on the roof beam body and extend and supply along the horizontal direction the connecting block plant with the fixed spread groove of waterstop installation department installation, the waterstop installation department is close to the lateral surface of the roof beam body is equipped with the sealing layer.

2. The expansion joint structure of claim 1, wherein: the waterstop installation part is provided with an installation hole, the end part of the waterstop is provided with a bulge, and the end part of the waterstop is inserted into the installation hole and is clamped with the installation hole.

3. The expansion joint structure of claim 2, wherein: the waterstop is the setting of V type, just the waterstop includes the steel band and is located the rubber band of steel band below.

4. The expansion joint structure of claim 1, wherein: reinforcing parts are arranged at the connecting grooves of the two beam bodies and extend from the bridge deck pavement layer of the beam body to the beam plate;

5. The expansion joint structure of claim 4, wherein: the anchor reinforcing bar is located concrete layer's tip is located the spread groove top, concrete layer is located the below of spread groove is equipped with pre-buried steel sheet.

6. The expansion joint structure of claim 5, wherein: and longitudinal steel bars which extend into the concrete layer from the connecting part of the bridge deck pavement layer and the beam plate and are connected with the embedded steel plates are arranged in the beam body.

7. The expansion joint structure of claim 6, wherein: all be equipped with many transverse reinforcement in concrete layer and the roof beam body, just transverse reinforcement laminating the anchor reinforcing bar sets up.

8. The expansion joint structure of claim 4, wherein: the concrete layer is formed by pouring C50 steel fiber concrete.

9. The expansion joint structure of claim 1, wherein: the expansion amount is 0-80 mm.

10. The expansion joint structure of claim 1, wherein: the sealing layer includes an elastic rubber layer.